Round Three of December PPMs Released. The third of four rounds of December 2014 PPM data from Nielsen Audio has been released for 12 markets including: Portland, Charlotte, Pittsburgh, Sacramento, San Antonio, Cincinnati, Cleveland, Salt Lake City, Las Vegas, Kansas City, Orlando, and Columbus. The survey period was November 6 through December 3. TALKERS magazine’s sister publication RadioInfo has all of the numbers from subscribing stations here. In addition, managing editor Mike Kinosian presents his “Ten Takeaways” from this batch of ratings on the main page at RadioInfo.